Motor fuel



Patented Nov. 2, 1926.

UNITED STAT BY MESNE ASSIGNMENTS,

. OF DAYTON, OHIO, ASSIGNORS,

MICHIGAN, A CORPORATION OF DELAWARE.

Moron FUEIi.

No Drawing.

- pounds having at least two aromatic closed chains. I

These compounds constitute a special class of aromatic amines with which we include mixed aromatic-aliphatic amines, and the primary, secondary, and tertiary amines in which one or more of the hydrogen atoms of ammonia have been replaced'by an aromatichydrocarbon radical, the total number of aromatic closed chains being at least two. Examples of these sub groups are the primary amines, includin i-phenyl naphthylamine, and amino-dip enyl; the secondary amines, including mono-ethyl and monomethyl naphthylamine, both alpha and beta, and di-phenyl amine; and I the tertiary amines including tri-phenyl amine. Certain of-these examples, such as. 4-phenyl naphthylamine and tri-phenyl amine, contain more than two aromatic closed chains.

By way of an example of one method of carrying out our invention we may add, by volume, 3 percent of naphthylamine to gasoline, agitate the liquid mass to make it homogeneous, mix the resulting fuel (which now has a higher critical compression pres sure) with air, preferably by passing it througha carburetor, and'burn the gaseous mixture, as in an internal combustion engine, under a pressure greater than the critical compression pressure of the low compression fuel. The 3 percent ofnaphthylamine will permit an increase of about 25 pounds in engine or mixture compression without a fuel knock.

The naphthylamine will remain in solution at room temperatures but if it is found desirable to use a blending agent to avoid Application filed May 3, 1924- Serial No. 710,927.

a freezing out of the naphthylamine or to assist 1n making the liquid fuel homogeneous an equal quantity by volume of benzol, amyl acetate or amyl alcohol may be used as a blending agent.

he process may be varied by injecting the naphthylamine into the intake or cylinder of an engine and by employing in place of the naphthylamine other NH hydrocarbon derivatives having at least two closed chains.

What we claim is:

1. A composition of matter comprising a -low compressionmotor fuel and a compound having more than one aromatic closed Chain and consisting of the substitution of at least one aromatic hydrocarbon radical for a hydrogen atom of ammonia.

2. A composition of matter comprising a low-compression motor fuel and a compound having two aromatic closed chains and consisting of the substitution of two aromatic hydrocarbon radicals for two hydrogen atoms of ammonia.

3. A composition of matter comprising a low compression motor fuel, a compound having more than one aromatic closed chain and consisting of the substitution of at least one aromatic hydrocarbon radical for a hy-' drogen atom of ammonia, and a blending agent.

4. A composition of matter including a low compression fuel and naphthylamine.

5. A composition'of matter including a low compression fuel, naphthylamine, and a blending agent. i

6. A motor fuel consisting of gasoline and na hthylamine in solution.

A motor fuel consisting of naphthylamine, benzol and gasoline.

8. A motor fuel consisting of a one-to-one solution of naphthylamineand benzol combined with gasoline, the amount of gasoline pre onderatmg over the solution of naph th litmine and benzol.

n testimony whereof we hereto affix our signatures.

CHARLES F. KETTERING. .THOMAS MIDGLEY, JR. 

